Layered flash movies: Bottom layer not working

I asked this on the “Client Side” board as a css z-layer question, but the more I think about it, I’m pretty sure this is a flash issue…

I have 2 movie clips on top of each other.
The top layer is a half-transparent colour.
The bottom layer is a button.

The mouse over works, BUT

  1. The ‘hand’ icon which tells you it is a button does not appear.
  2. You can’t actually click the button.

It’s like the top layer of flash is completely blocking the bottom layer. (Everything, except the mouse over)

I’m using safari3/ff2 on mac.

Any ideas would be greatly appreciated!!!